From space, the earth looks blue. This is _________ about seventy-one percent of its surface is covered by water.

试卷相关题目

• 1– Why didn't you tell him about the meeting? – He rushed out of the room _____ I could say a word.

  A.before

  B.until

  C.when

  D.after

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• 2Child ______ he is, he can speak four different languages.

  A.as

  B.although

  C.if

  D.before

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• 3To sum up, ______ war is unavoidable, human beings cannot enjoy everlasting peace.

  A.as long as

  B.as far as

  C.as soon as

  D.as well as

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• 4______ I went to Mount Hua, I was deeply impressed with its beautiful scenery.

  A.For the first time

  B.The first time

  C.At first

  D.It was the first time

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• 5_______ children get older, they become more and more interested in everything.

  A.Once

  B.Whether

  C.With

  D.As

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• 6—How was that? —I was chatting on line ______ the power went out.

  A.because

  B.while

  C.as

  D.when

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• 7I wonder when it was __________ you came to realize __________ he said meant.

  A.that; what

  B.what; that

  C.what; what that

  D.that; what what

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• 8I was doing my homework in my bedroom _______the light went out. I did it with a candle on.

  A.which

  B.while

  C.when

  D.where

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• 9He is so busy. He cannot afford enough time with his son ____ he wants to.

  A.even if

  B.as if

  C.because

  D.before

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• 10_____ the police thought he was the most likely one, they could not arrest him since they had no exact proof about it.  

  A.Although

  B.As long as

  C.If only

  D.As soon as

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